db.isMaster()

db.isMaster()

Deprecated since version 4.4.2: Use db.hello() instead.

Returns a document that describes the role of the mongod instance.

If the mongod is a member of a replica set, then the ismaster and secondary fields report if the instance is the primary or if it is a secondary member of the replica set.

Tip

See:

isMaster for the complete documentation of the output of db.isMaster().